watchdog: qcom: document device tree bindings
authorJosh Cartwright <joshc@codeaurora.org>
Thu, 25 Sep 2014 22:51:03 +0000 (17:51 -0500)
committerWim Van Sebroeck <wim@iguana.be>
Mon, 20 Oct 2014 18:52:54 +0000 (20:52 +0200)
The Qualcomm Krait Processor Sub-system (KPSS) contains one or more
instances of the WDT.  Provide documentation on how to describe these in
the device tree.

Signed-off-by: Josh Cartwright <joshc@codeaurora.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Documentation/devicetree/bindings/watchdog/qcom-wdt.txt [new file with mode: 0644]

diff --git a/Documentation/devicetree/bindings/watchdog/qcom-wdt.txt b/Documentation/devicetree/bindings/watchdog/qcom-wdt.txt
new file mode 100644 (file)
index 0000000..4726924
--- /dev/null
@@ -0,0 +1,24 @@
+Qualcomm Krait Processor Sub-system (KPSS) Watchdog
+---------------------------------------------------
+
+Required properties :
+- compatible : shall contain only one of the following:
+
+                       "qcom,kpss-wdt-msm8960"
+                       "qcom,kpss-wdt-apq8064"
+                       "qcom,kpss-wdt-ipq8064"
+
+- reg : shall contain base register location and length
+- clocks : shall contain the input clock
+
+Optional properties :
+- timeout-sec : shall contain the default watchdog timeout in seconds,
+                if unset, the default timeout is 30 seconds
+
+Example:
+       watchdog@208a038 {
+               compatible = "qcom,kpss-wdt-ipq8064";
+               reg = <0x0208a038 0x40>;
+               clocks = <&sleep_clk>;
+               timeout-sec = <10>;
+       };